Mary O'Brien, RN
NPI 1720826936 · Addiction (Substance Use Disorder) Registered Nurse · Oak Harbor, WA
Mary O'Brien, RN is a Addiction (Substance Use Disorder) Registered Nurse provider in Oak Harbor, WA (NPI 1720826936).
Provider details
- NPI number
- 1720826936
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- RN61441667 (WA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-07-20
- Last updated
- 2024-07-20
- Certified
- 2024-07-19
Frequently asked questions
- What is Mary O'Brien's NPI number?
- Mary O'Brien's National Provider Identifier (NPI) is 1720826936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Brien's specialty?
- Mary O'Brien is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Registered Nurse (Nursing Service Providers).
- Where is Mary O'Brien located?
- Mary O'Brien's practice location on file with NPPES is 275 Ne 10th Ave, Oak Harbor, WA 98277-5903.
- What is Mary O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Brien is (360) 499-7011.
- Is Mary O'Brien's NPI active?
- Yes — Mary O'Brien's NPI (1720826936) is active in the NPPES registry as of the last update on 2024-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.